Re: Best way to edit Linux files in z/VM 3270

2016-09-21 Thread Bruce Hayden
Also remember that for ".conf" files that are assigning values to
environment variables, last assignment wins.  So, sometimes I just use
"echo" to append a new value to the file so that I can get the system up.
 (3270 copy and paste also helps input the line.)  Then later on I use vi
to remove the duplicate assignment.

On Tue, Sep 20, 2016 at 2:59 PM, Marcy Cortes  wrote:

> There's just mainly one sed command that i've needed in order to fix
> enough to get the network up.
>
> sed -i -e 's/oldstring/newstring/'  filename
>
> That's generally been enough to get me through say bad IP addresses or
> gateway settings.
>
>
>
> -Original Message-
> From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
> Mark Post
> Sent: Tuesday, September 20, 2016 12:25 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: [LINUX-390] Best way to edit Linux files in z/VM 3270
>
> >>> On 9/20/2016 at 03:01 PM, "Diep, David (OCTO-Contractor)"
> >>> 
> wrote:
> > Hi everyone,
> >
> > I've searched everywhere and I cannot find for editing Linux files
> > while logged in with 3270. Vi will just get me stuck.  I looked at
> > 'ed', but I get stuck as well... any recommendations??
>
> The ed command works fine, but you need to understand how to use it.  It's
> ... different.
>
> I frequently use sed, but if you're at the point where the root file
> system is mounted, you should be able to use the terminal server access.
> This allows you to SSH to the terminal server, then connect to the target
> system and use the normal vi/vim editors.
>
>
> Mark Post
>
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>



--
Bruce Hayden
z/VM and Linux on z Systems ATS
IBM, Endicott, NY

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Project mgmt software

2016-09-21 Thread PHILIP TULLY
Kind of as an extension to Mike M's looking for a problem tracking 
system, does anyone use a Project mgmt tool on z...either VM or linux on 
Z?   I have used redmine on linux on X, but having some issues with it 
on Z/


TIA
Phil

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QEMU sans KVM

2016-09-21 Thread Rick Troth
On 09/15/2016 03:49 AM, Stefan Raspl wrote:
> QEMU v2.7 is out! See
> kvmonz.blogspot.com/2016/09/qemu-v27-released.html for a list of
> highlights for KVM on z.

Speaking of which ... does anyone know the ins-and-outs of using QEMU
for z "guests" without KVM?

I've used QEMU to present other architectures. (Was running SPARC just
last week.) But QEMU is very PC-oriented, so it's tough to wade through
the doco for mainframe hints. Will QEMU even do 3390 or 3370? or OSA or
LCS? The para-virt disk and NIC are nice for a lot of use cases, but
they present a short-fall in the grand picture of full capability we all
hope to see.

Hercules works fine. Nothing wrong with it, except that libvirt won't
talk to it. Ah! Now there's a novel idea: hypervisors and emulators
which can be managed through a common utility or protocol. So QEMU is
interesting if perhaps I can launch 'virt-mangler' and bring my
Linux/390 into the same console as the other kiddos.

-- R; <><




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Re: QEMU sans KVM

2016-09-21 Thread Mark Post
>>> On 9/21/2016 at 04:45 PM, Rick Troth  wrote: 
> On 09/15/2016 03:49 AM, Stefan Raspl wrote:
>> QEMU v2.7 is out! See
>> kvmonz.blogspot.com/2016/09/qemu-v27-released.html for a list of
>> highlights for KVM on z.
> 
> Speaking of which ... does anyone know the ins-and-outs of using QEMU
> for z "guests" without KVM?

I'm not aware of any way to do that.

> I've used QEMU to present other architectures. (Was running SPARC just
> last week.) But QEMU is very PC-oriented, so it's tough to wade through
> the doco for mainframe hints. Will QEMU even do 3390 or 3370? or OSA or
> LCS? The para-virt disk and NIC are nice for a lot of use cases, but

To my knowledge, no.  All that is there are the virtio-ccw devices.

> they present a short-fall in the grand picture of full capability we all
> hope to see.

> Hercules works fine. Nothing wrong with it, except that libvirt won't
> talk to it. Ah! Now there's a novel idea: hypervisors and emulators
> which can be managed through a common utility or protocol. So QEMU is
> interesting if perhaps I can launch 'virt-mangler' and bring my
> Linux/390 into the same console as the other kiddos.

This works if you have libvirtd running on the host LPAR.  I've used it many 
times.


Mark Post

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Re: Best way to edit Linux files in z/VM 3270

2016-09-21 Thread Berry van Sleeuwen
Indeed, sed/awk can be used. Or check out the rpl package, but still 
that is just a command to replace strings from the command line, just 
like sed.


The only times I need to use the 3270 console is when the network (ssh) 
is not available. In that case we have the option to shutdown the 
machine, since it's not available to the customer anyway. Then we can 
link/mount the disks in our emergency system and use vi (or whatever 
full-screen editor) from there.


Regards, Berry.

Op 20-09-16 om 21:10 schreef Harley Linker:

The only option that I'm aware of is the 'sed' command.


Harley Linker



-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Diep, 
David (OCTO-Contractor)
Sent: Tuesday, September 20, 2016 2:02 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Best way to edit Linux files in z/VM 3270

Hi everyone,

I've searched everywhere and I cannot find for editing Linux files while logged 
in with 3270. Vi will just get me stuck.  I looked at 'ed', but I get stuck as 
well... any recommendations??

Thanks

David Diep

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